Susan "Sue" Holloway (born May 19, 1955 in Halifax, Nova Scotia) is a Canadian cross country skier who competed in the late 1970s and sprint kayaker who competed from the late 1970s to the early 1980s. Holloway became the first woman and first Canadian to compete in both Summer and Winter Games in the same year, in the 1976 Winter Olympics in cross-country skiing and 1976 Summer Olympics in canoe sprint.
Holloway was selected as Canada's flag bearer for the Opening Ceremonies of the 1980 Summer Olympics in Moscow. However, Canada's boycott of those games denied her the opportunity to participate in the Parade of Nations. Holloway won two medals in canoe sprint at the 1984 Summer Olympics in Los Angeles with a silver in the K-2 500 m and a bronze in the K-4 500 m events.
In cross country skiing at the 1976 Winter Games in Innsbruck, she finished 32nd in the 10 km and seventh in the 4 x 5 km relay.
Holloway was inducted into the Canadian Olympic Hall of Fame in 1986.
Holloway attended Simon Fraser University, competing for their swim team, and earning a physical education degree there.
In 2002, she married Greg Joy, silver medalist in the men's high jump at the 1976 Summer Games in Montreal.